TY - JOUR AU - B. R. Vaǐnberg AU - S. G. Gindikin TI - A strengthened Huygens principle for a certain class of differential operators with constant coefficients JO - Trudy Moskovskogo matematičeskogo obŝestva PY - 1967 SP - 151 EP - 180 VL - 16 UR - http://geodesic.mathdoc.fr/item/MMO_1967_16_a6/ LA - ru ID - MMO_1967_16_a6 ER -